Compaq Deskpro EX Series Maintenance & Service Manual

Brand: Compaq

Model: Deskpro EX Series

Type: Maintenance & Service Manual

This manual is also suitable for

Miscellaneous Parts

16 RTC Battery 153099-001

* Mouse 216920-001

17 Bezel blanks (2) 216913-001

* Not shown

Cables

9 CD-ROM drive cable/Hard drive cable 216914-001

10 Diskette drive cable 216916-001

11 Power button and LED cable 216917-001

12 CD audio cable Not spared

Standard and Optional Boards

13 System board 216906-001

* Processor, Intel Celeron, 566/66 with heatsink 203967-001

Processor, Intel Pentium III, 667/133 with heatsink

192007-001

15 Memory module, 64MB/133MHz 170080-001

logo Registered U.S. Patent and Trademark Office.

Microsoft, MS-DOS, Windows and other names of Microsoft

products referenced herein are trademarks or registered

trademarks of Microsoft Corporation.

Intel and Pentium are registered trademarks of Intel Corporation.

MMX and Celeron are trademarks of Intel Corporation.

Product names mentioned herein may be trademarks and/or

registered trademarks of their respective companies.

First Edition. September 2000.

Documentation (not shown)

Maintenance & Service Guide 216921-001

Service Reference Guide 152611-001

Compaq Quick Troubleshooting Guide 153837-001

Compaq Deskpro EX

Maintenance & Service Guide

Compaq Deskpro EX Series

of Personal Computers

Microtower Models

Keyboards (not shown)

Keyboard 216919-xx1

United States -00x

French Canadian -12x

Japanese (Kanji) -29x

Latin American Spanish -16x

Spanish (LA MERCO) -C9x

PRC Chinese -AAx

Taiwanese -ABx

HK Chinese -ACx

Spare Part Number: 216921-001

Part Number: 216616-001

Miscellaneous Screw Kit (not shown)

Screw Kit, including: 216918-001

4 US screws for drive retention

4 Metric screws for drive retention

2 access panel screws

System Unit

1 Left access panel with 2 screws Not spared

2 Chassis assembly (reference only) Not spared

3 Right access panel with 2 screws Not spared

4 Front bezel Not spared

5 Power supply 216912-001

Mass Storage Devices

6 10-GB hard drive with 4 screws 203139-001

7 48X CD-ROM drive with 4 screws 187263-001

8 Diskette drive with 4 screws 222604-001

119

Clearing CMOS and Passwords

Passwords may need to be changed, or the computer’s configuration (CMOS) may occasionally be

corrupted. Both can be cleared using jumper JP5.

1. Turn off the computer and any external devices, then disconnect the power cord from the

power outlet.

2. Remove the access panel on the left side of the computer.

3. Locate the header labeled JP5. Place a jumper across pins 1 & 2 on JP5.

4. Connect the power cord to the power outlet.

5. Turn on the computer.

6. The password reset screen automatically displays. Choose either :

F1 to reset CMOS

F4 to reset passwords

The computer executes the choice and automatically shuts down.

7. Disconnect the power cord from the power outlet.

8. Remove the jumper from JP5 pins 1 & 2 and place it on pins 2 & 3 (safe position).

9. Replace the access panel.

10. Reconnect the power cord to the power outlet and turn the computer on.

If F1 was selected in step 6, the CMOS defaults are reset when the computer starts.

If F4 was selected, all passwords are cleared when the computer starts.

NOTE: Clearing CMOS clears the Power-On Password. It does NOT clear the Supervisor Password.

Setting the Supervisor and Power-On Passwords

A. Setting the Supervisor Password provides access protection for the Computer Setup utility.

1. Turn on the computer, then hold down the DEL key until the Computer Setup utility begins.

2. Select “Change Supervisor Password” and follow screen instructions.

3. The password will be enabled after saving settings and exiting the utility.

B. Setting a Power-On Password.

NOTE: A Supervisor Password must have previously been set. That same password will be used for

the Power-On Password.

1. Turn on the computer, then hold down the DEL key until the Computer Setup utility begins.

2. Select Advanced CMOS Setup➔Password Check.

3. Select “Always” from the Available Options list.

4. The password will be enabled after saving settings and exiting the utility.

NOTE: Clearing passwords clears both the Supervisor and Power-On Passwords, but does not clear

the “Always” option. To reset only the Supervisor Password, change “Always” to “Setup” on

the Available Options list.

NOTE: Clearing CMOS clears the Power-On Password. It does NOT clear the Supervisor Password.

I/O Map

Address (hex) Size Description

0000-000F 16 bytes DMA controller

0020-0021 2 bytes Programmable Interrupt Control (PIC)

0040-0043 4 bytes System timer

0060 1 byte Keyboard controller byte-reset IRQ

0061 1 byte System speaker

0064 1 byte Keyboard controller, CMD/STAT byte

0071-0071 2 bytes System CMOS/Real Time Clock

0072-0073 2 bytes System CMOS

0080-008F 16 bytes DMA controller

0092 1 byte Fast A20 and PIC

00A0-00A1 2 bytes PIC

00B2-00B3 2 bytes APM control

00C0-00D0 32 bytes DMA

00F0 1 byte Numeric data processor

0170-0177 8 bytes Secondary IDE channel

01F0-01F7 8 bytes Primary IDE channel

One of these ranges: Can very from Audio/game port

0200-0207 1 byte to 8 bytes

0208-020F

0210-0217

0218-021F

One of these ranges: Audio (SoundBlaster Pro+ compatible)

0220-022F 16 bytes

0240-024F 16 bytes

0228-022F* 8 bytes LPT3

0278-027F* 8 bytes LPT2

02E8-02EF* 8 bytes COM4/video (8514A)

02F8-02FF* 8 bytes COM2

One of these ranges: 8 bytes MPU-401(MIDI)

0320-0327

0330-0337

0340-0347

0350-0357

0376 1 byte Secondary IDE Channel command port

0377, bit 6:0 7 bits Secondary IDE Channel status port

0378-037F 8 bytes LPT1

0388-038B 6 bytes AdLib+(FM synthesizer)

03B0-03BB 12 bytes

Intel 82810e-DC100 Graphics/Memory Controller Hub

(GMCHE)

03C0-03DF 32 bytes Intel 82810e Graphics/Memory Controller Hub (GMCHE)

03E8-03EF 8 bytes COM3

03F0-03F5 6 bytes Diskette channel 1

03F6 1 byte Primary IDE channel command port

03F8-03FF 8 bytes COM1

04D0-04D1 2 bytes Edge/level triggered PIC

One of these ranges: 8 bytes Windows Sound System

0530-0537

0E80-0E87

0F40-0F47

LPTn+400h 8 bytes ECP port, LPTn base address+400h

0CF8-0CFB** 4 bytes PCI configuration address register

0CF9*** 1 byte Turbo and reset control register

0CFC-0CFF 4 bytes PCI configuration data register

FFA0-FFA7 8 bytes Primary bus master IDE registers

FFA8-FFAF 8 bytes Secondary bus master IDE registers

Size and address Description

96 contiguous bytes starting on a 128-byte divisible boundary ICH (ACPI+TCO)

64 contiguous bytes starting on a 64-byte divisible boundary Motherboard resource

64 contiguous bytes starting on a 64-byte divisible boundary Onboard audio controller

32 contiguous bytes starting on a 32-byte divisible boundary ICH (USB)

16 contiguous bytes starting on a 16-byte divisible boundary ICH (SMB)

4096 contiguous bytes starting on a 4096-byte divisible boundary

Intel 82810AA PCI bridge

32 contiguous bytes starting on a 32-byte divisible boundary Intel 82559 LAN controller

* Default, but can be changed to another address range.

** Dword access only

*** Byte access only

NOTE: Some additional I/O addresses are not available due to ICH addresses aliassing.

DMA

Hardware

DMA Data Width System Function

0 8- or 16-bits Audio

1 8- or 16-bits Audio/Parallel port

2 8- or 16-bits Diskette drive

3 8- or 16-bits Parallel port (for ECP or EPP)/audio

4 DMA controller

5 16-bits Open

6 16-bits Open

7 16-bits Open

System Memory Map

Address Range Memory Address Size Description

1024K–524288K 100000–1FFFFFFF 511MB Extended memory

960K–1024K F0000-FFFFF 64KB Runtime BIOS

896K–960K E0000-EFFFF 64KB Reserved

800K–896K C8000-DFFFF 96KB Available high DOS memory (open to PCI bus)

640K-800K A0000-C7FFF 160KB Video memory and BIOS

639K-640K 9FC00-9FBFF 1KB Extended BIOS data (movable by memory

manager software)

512K-639K 80000-9FBFF 127KB Extended conventional memory

0K-512K 00000-7FFFF 512KB Conventional memory

System Interrupts (IRQ)

IRQ System Resource

NM1 I/O channel check

0 Reserved, interval timer

1 Reserved, keyboard buffer full

2 Reserved, cascade interrupt from

slave PIC

3 COM2*

(user available if COM2 is not present)

4 COM1*

5 LPT2 (Plug and Play option)/audio/user

available

6 Diskette drive controller

7 LPT1*

* Default, but can be changed to another IRQ.

IRQ System Resource

8 Real-time clock

9 User available

10 User available

11 User available

12 Onboard mouse port

(if present, else user available)

13 Reserved, math coprocessor

14 Primary IDE

(if present, else user available)

15 Secondary IDE

(if present, else user available)

J30 Secondary IDE connector

J32 Front panel/Misc header

J34 Primary IDE connector

JP1 Front panel USB (pins 2&3

jumpered = default shipping

configuration)

JP2 Back panel USB (pins 2&3

jumpered = default shipping

configuration)

JP3* FWH lock (boot block)

JP4* CPU safe speed

JP5 Clear password/CMOS jumper

* JP3 and JP4 settings should never be altered.

Connectors and Jumpers

BAT1 External battery

DIMM1-2 Memory slots

J9 CD audio

J10 Aux-in connector

J11 Telephony connector

J12 Audio/Modem Riser (AMR) slot

J13-15 PCI Expansion Slots

J17 CPU fan connector

J18 Wake on Lan (WOL)

J19 Processor socket

J23 ATX power connector

J26 Floppy drive connector

Compaq Deskpro EX Series Maintenance & Service Manual

Brand: Compaq

Model: Deskpro EX Series

Type: Maintenance & Service Manual

This manual is also suitable for

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Compaq Deskpro EX Series Maintenance & Service Manual

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Compaq Deskpro EX Series Maintenance & Service Manual

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